EFTfitter---A tool for interpreting measurements in the context of effective field theories

TL;DR

EFTfitter is a Bayesian tool designed to interpret particle physics measurements within effective field theories by calculating posterior probabilities of model parameters, demonstrated through top-quark measurements constraining anomalous couplings.

Contribution

The paper introduces EFTfitter, a novel Bayesian software tool for interpreting measurements in effective field theories, with a practical example involving top-quark data.

Findings

Successfully constrained anomalous Wtb-vertex couplings

Demonstrated the tool's application with real particle physics data

Provided a flexible framework for EFT parameter analysis

Abstract

Over the past years, the interpretation of measurements in the context of effective field theories has attracted much attention in the field of particle physics. We present a tool for interpreting sets of measurements in such models using a Bayesian ansatz by calculating the posterior probabilities of the corresponding free parameters numerically. An example is given, in which top-quark measurements are used to constrain anomalous couplings at the Wtb-vertex.